#3B1F66
Closest named color: Royal Purple (#4B006E). oklch(31.9% 0.119 297.3), rgb(59, 31, 102).
Aa
White text reads best on this color (13.34:1).
About this color
#3B1F66 is a dark, moderately saturated purple. In OKLCH its lightness is 32%, its chroma 0.119 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.052 away. White text reads best on it, at 13.34:1.
| Hue family | Purples |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.57:1 |
| White text | 13.34:1 |
Values
| HEX | #3B1F66 |
| RGB | rgb(59, 31, 102) |
| HSL | hsl(264, 53%, 26%) |
| OKLCH | oklch(31.9% 0.119 297.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #3B1F66 | 13.34:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #3B1F66 | 1.57:1 | Fails | Lc 0.0 | Not readable |
| #3B1F66 text on white | 13.34:1 | AAA | Lc 99.3 | Preferred for body text |
| #3B1F66 text on black | 1.57:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F6F3FF
oklch(97% 0.016 297.5)
-
Step 100
100
#ECE5FF
oklch(93.5% 0.036 298)
-
Step 200
200
#DDD1FF
oklch(88.5% 0.064 297)
-
Step 300
300
#C8B2FF
oklch(81% 0.109 297)
-
Step 400
400
#AE85FF
oklch(70.8% 0.175 297.2)
-
Step 500
500
#9C5DFF
oklch(63% 0.229 297.2)
-
Step 600
600
#8D21FF
oklch(55.6% 0.283 297.3)
-
Step 700
700
#7900E0
oklch(49.2% 0.266 297.4)
-
Step 800
800
#6300BA
oklch(42.7% 0.232 297.2)
-
Step 900
900
#511395
oklch(37.7% 0.187 297.5)
-
Step 950
950 (this color)
#3B1F66
oklch(31.9% 0.119 297.3)
#3B1F66 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #002F68 | 0.080 |
| Deuteranopia (no green cones) | #002E65 | 0.080 |
| Tritanopia (no blue cones) | #302F3F | 0.091 |
| Achromatopsia (no color) | #2F2F2F | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B1F66
#3B1F66
oklch(31.9% 0.119 297.3)
- #303700
#303700
oklch(31.9% 0.074 117.3)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #3B1F66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.052
- Indigo #4B0082 ΔE 0.065
- Plum Purple #4E0550 ΔE 0.068
- Midnight Blue #191970 ΔE 0.068
- Deep Violet #490648 ΔE 0.073
- Marine #042E60 ΔE 0.080
- Prussian Blue #1D3557 ΔE 0.080
- Eggplant Purple #430541 ΔE 0.081
Use #3B1F66 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.